JP4216120B2 - The method of cleaning rice during the washing-free rice production using a continuous rice washer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, in the manufacture of non-bran rice, relates to throughout the method of rice washing operations.
[0002]
[Prior art]
Non-washed rice is rice that can be cooked without washing. It is made by putting milled polished rice into a rice washing machine, stirring it with water, washing off the adhering rice cake, and then removing the water. (For example, refer to Patent Document 1) That is, the rice-washing roll is rotated in the rice-washing cylinder, and the polished rice and water continuously fed into the cylinder are stirred by the rice-washing blades of the rice-washing roll, and adhered to the polished rice. Washed rice is produced in such a manner that the rice cake is washed off in a short time, and then the water adhering to the rice is quickly removed so that the moisture content of the rice grains does not increase. Conventionally, it has already been proposed to make fertilizers and feeds from rice sharpening juice generated at the time of washing with rice by heating and drying to form oxidation-resistant spherical granules. (For example, see Patent Document 2)
[0003]
[Patent Document 1]
Japanese Patent No. 2602090 (page 1-6)
[Patent Document 2]
JP 11-103803 A (page 1-15)
[0004]
[Problems to be solved by the invention]
However, when trying to make non-washed rice with a continuous rice washer as described above, it is first necessary to reduce the amount of washing water as much as possible in order to reduce costs. For this reason, the sachet contained in the washing water becomes thick and remains attached to the machine after work, and if left as it is, it rots and generates odors and the like. This is especially noticeable in the summer, and the next work cannot be done as it is. For this reason, conventionally, after the work is completed, the apparatus is disassembled and cleaned, which takes time and effort, which has been a major factor hindering work efficiency.
[0005]
In view of these points, the present invention provides a method for starting and cleaning rice washing operations at the time of washing-free rice production with a continuous rice washing machine , which eliminates the need for disassembly and washing after the completion of rice washing operations and improves work efficiency. is there. Another object of the present invention is to provide a method for starting and cleaning rice washing at the time of washing-free rice production by a continuous rice washing machine that can be carried out easily and inexpensively.
[0006]
[Means for Solving the Problems]
The technical means of the method of starting and washing the rice without washing with the continuous rice washing machine of the present invention is to wash the rice with a small amount of water. In the washing with rice without washing with the continuous rice washing machine, the washing with rice At the end of the work , the water supply to the rice washer is stopped, the rice washer is heated, and the concentrated washing water remaining in the rice washer is heated and dried. The thin film is made to adhere and remain, and at the time of the next rice washing operation, the thin film-like adhesion residue is dissolved in water and discharged with polished rice and a small amount of water.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described based on examples of the drawings. FIG. 1 shows an embodiment of the rice washing apparatus. This rice washing apparatus includes a rice washing machine 1 and a dehydrator 20. The rice washing machine 1 is a horizontal type, and a rice washing roll 3 is rotatably supported in a rice washing cylinder 2 provided substantially horizontally. The cross-sectional shape of the rice-washing cylinder 2 is substantially circular or a polygon having 12 or more corners as shown in FIG. 2 and FIG. 3, and the corner is made as small as possible so that it is convenient for drying. That is, in the case of a hexagonal cylinder as in the prior art, hot air does not easily pass through the corners, and therefore, drying of the portion is delayed during heat drying with hot air. Therefore, since the corner angle must be as small as possible, it is preferable to make the corner as circular as possible.
[0012]
However, when the rice-washing cylinder 2 is circular or a polygon that is close to a circle, the rice grains rotate with the rice-washing roll 3, and in order to prevent this, many small protrusions 4 having a height of 2 mm or less are provided on the inner wall of the cylinder. It is good to attach. The rice washing roll 3 has a plurality (two in the illustrated example) of rice washing blades 5 attached to the outer surface. Thereby, when polished rice and water are stirred in the rice washing cylinder 2, the rice grains are rubbed against each other by an appropriate pressure, and the rice cake adhering to the rice is washed away.
[0013]
Further, as shown in FIG. 1, the rotation main shaft 6 of the rice washing roll 3 is rotated by a motor 7, and the rice washing roll 3 is provided with a rice feed spiral 8 on the inlet side, and on the outlet side. The resistance blade 9 is provided, and the rice sent to the rice washing cylinder 2 is stirred by the rice washing blade 5 under a constant pressure. In addition, 10 is a rice feed hopper and 11 is a water supply pipe. The polished rice sent from the hopper 10 is stirred together with water, and the rice cake remaining on the surface of the rice grains is washed away. This rice washing operation is continuously performed while adjusting the amount of rice supplied by the flow valve 16 attached to the rice supply port. After the rice is washed, the rice passes through the discharge pipe 12 to the dehydrator 20 from the discharge port. Sent.
[0014]
Further, as shown in FIG. 1, the rice washing machine 1 has hot air supply pipes 13 and 13 attached to appropriate positions such as an inlet portion and an outlet portion of the rice washing cylinder 2, and the rice washing operation is completed. At times, hot air can be sent into the washing cylinder 2. Moreover, the heater 14 is attached to the outer wall of the rice washing cylinder 2, and the rice washing cylinder 2 can be heated from the outer surface by energizing the heater. Note that it is possible to freely select the design between hot air heating and heater heating, and both can be used simultaneously.
[0015]
Thereby, when the rice washing operation is finished, hot air is sent into the rice washing cylinder 2 or the heater 14 is energized to heat the rice washing cylinder 2 and adhere to the rice washing cylinder 2 or the rice washing roll 3. To dry the cleaning water remaining in the cylinder. As a result, the apportionment and the like contained in the cleaning water become a thin film and adhere to each part in the cylinder. This portion is sufficiently dry so it will not rot if left untreated. This remaining portion is easily dissolved in water at the next rice washing operation, becomes washing water, and is discharged together with the rice washing. The temperature of the hot air is usually 50 to 100 ° C. for about 10 to 60 minutes, and in the case of heater heating, it may be heated to 100 to 150 ° C. for about 10 to 60 minutes. . Of course, it is possible to make the temperature higher than this, and there is no particular problem.
[0016]
In addition, it is important that this heating operation is automatically performed without delay at the end of the rice washing operation. If this is slow, the sharpening juice remaining in the rice washing machine 1 is highly nutritious, high in water content and rich, and the conditions for breeding germs are in place. It is also generated. As a means for this purpose, the rice rinsing machine usually has a level sensor 15 attached to the water supply hopper 10 so as to always detect the remaining amount of rice in the hopper. When it detects "cut", it issues a "rice feed" signal to instruct the next rice feed, so if the next rice is not sent even after a certain period of time has elapsed after detection by this sensor 15, the process ends. Judgment is made and heating is automatically started. This is convenient because it is possible to automate the work completion measures immediately after the work is finished, without troublesome manpower.
[0017]
Next, the dehydrator 20 will be described. The discharge pipe 12 of the rice washing machine 1 extends to the center of the dehydrator 20, and the polished rice and washing water that have finished washing are discharged from the lower end of the pipe. The dehydrator 20 has a double structure of a screw cylinder 21 and a dewatering basket 22 that rotate together. Screw blades 23 are attached to the outer surface of the screw cylinder 21, and the wall surface of the dewatering basket 22 is made of a net or a perforated plate. The polished rice and the washing water that have come out from the lower end of the discharge pipe 12 are moved outward from the opening provided at the lower end of the screw cylinder 21 by centrifugal force accompanying the rotation of the screw cylinder 21, and are further dehydrated. It is sent upward along the inner wall of the dewatering basket 22 by the screw blades 23 of the screw cylinder 21 rotating slightly faster than the basket 22. During this time, the washing water leaks outward from the wall surface of the dewatering basket 22, and when it reaches the upper end of the wall surface, most of the washing water adhering to the surface of the polished rice is removed.
[0018]
The polished rice that has reached the upper end of the dewatering tank 22 further moves outward, falls through between the inner cover 24 and the outer cover 25, and is then sent to a dryer (not shown). The water is almost completely removed. On the other hand, the wash water leaked outward from the dehydration tank 22 is discharged from the drain pipe 26. A hot air supply pipe 27 is also attached to the dehydrator 20, and hot air is blown into the machine after the dehydration operation is completed, and the inside is heated and dried. In addition, in the dehydrator 20, a heater may be attached to each part of the machine as a heating device, and the inside of the machine may be heated and dried by this heater. In this way, the washing water remaining in the machine is dried, and even if it is left after work, the spillage does not rot, etc., so that it can be easily dissolved and discharged in the next work. Become.
[0019]
(Example of end work)
After the washing operation, hot air was sent to the washing machine 1 and the dehydrator 20. The temperature of the hot air was 60 ° C., and it was fed for 30 minutes. As a result, a thin film of dried soot adhered to each part in the machine. Thereafter, it was allowed to stand at room temperature for 3 days, but the timber was not spoiled and no odor was generated. When the next rice washing operation was performed, the apportioning was easily solved and there was no hindrance to the operation.
[0020]
As another finishing operation, the rice washing tube 2 was heated by energizing the heater 14 attached to the outer surface of the rice washing tube after the rice washing operation. The heating temperature was 150 ° C. or lower, and heating was performed for 30 minutes. A thin film of dried rice cake was attached to various places inside the rice washing machine 1. This was allowed to stand for 3 days at room temperature, but the timber did not rot. Further, since the heating temperature was relatively low at 150 ° C. or less, there was no heat damage of each part in the machine such as a bearing.
[0021]
The present invention is not limited to the above-described embodiments, and can be freely modified within the scope of the claims. In particular, the structure of the rice washer and dehydrator can be set freely. The rice washer can be used for a horizontal type, a vertical type (the flow direction of rice is from top to bottom, or from bottom to top), and an oblique type. .
[0022]
In beginning to end method bran rice work at no-bran rice production by continuous RICE machine of the present invention, first, because carried out in water amount of water rice washing work is small, at the end of the rice washing operations, the wash water remaining on the rice washing machine is bran fraction Becomes thicker. Therefore, when this washing water is heated and dried, the sachet or the like becomes a thin film and remains attached to each part in the rice washing machine. The timber thus formed is sufficiently dried, so that even if it is left as it is, the timber does not rot. This eliminates the need for disassembly and cleaning in the machine as in the prior art, thus greatly improving work efficiency.
[0023]
Furthermore, in this invention , the residue which was heat-dried and remained in the rice-washing machine is washed away at the time of the next rice-washing operation . During the next rice washing operation, the milled rice and a small amount of water are sent again and stirred in the rice washing machine under a constant pressure, so that the thin film residue that has adhered is dissolved and discharged. Is done. Therefore, it is very convenient because it does not take time to remove the residue.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view schematically showing an embodiment of a rice washing apparatus according to the present invention.
FIG. 2 is a cross-sectional view of a rice washing cylinder.
FIG. 3 is a cross-sectional view of another embodiment of the rice washing cylinder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rice washing machine 2 Rice washing cylinder 3 Rice washing roll 4 Small protrusion 5 Rice washing blade 10 Rice washing hopper 11 Water supply pipe 12 Drain pipe 13 Hot air supply pipe 14 Heater 15 Level sensor 16 Flow valve 20 Dehydrator 21 Screw cylinder 22 Dehydration tank 23 Screw blade 26 Drain Tube 27 Hot air supply tube

Claims (1)

In washing rice during washing without washing using a continuous rice washing machine, washing rice with a small amount of water,
At the end of the rice-washing operation, the water supply to the rice-washing machine is stopped, the rice-washing machine is heated, the thick washing water remaining in the rice-washing machine is heated and dried, and each part in the rice-washing machine is The thin portion is made into a thin film to leave it attached,
A method of starting and washing rice during the washing-free rice production using a continuous rice washing machine, in which the thin film-like adhering residue is dissolved and discharged with polished rice and a small amount of water at the next rice washing operation.

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